Worldspace
A Worldspace is a data structure and the representation of a world inside the game. Every worldspace is made up of Cells, and every cell belongs to at least one worldspace.
In the Demo, the Exterior World "Virrihael" is a Worldspace made up of cells that represent each one a tile of terrain, that are loaded and streamed together as the player walks by. In other words, a Worldspace is nothing more than the representation of a world, that will be filled with Cells.
You can also view it as a "dimension", imagine to have your worldspace where your game is based, and that you want to have a portal that brings you to a different world, in this case this different world will be a new Worldspace with its own cell, that can be connected to your original world with the use of a Door.
Every Worldspace can be either an Interior Worldspace or an Exterior Worldspace.
Interior Worldspace
An Interior Worldpsace is a Worldspace that is composed of Interior Cells.
You can only load a single Cell inside an Interior Worldspace at time, and they cannot be streamed or divided in tiles.
An Interior worldspace is made to represent something that exists in the Exterior World, but is accessible through a Door, like a City, a Cave or any other dungeon.
For example. in the Demo there is the worldspace "City" that represents the inside of the City, and it contains the City itself and every other interior that exist in it. Also the worldspace "Interior" contains all the Interiors that are present in the Exterior World "Virrihael" (like the Tavern or the Vera's Farmhouse).
Exterior Worldspace
An Exterior Worldspace is a Worldspace that is composed of Exterior Cells.